MVV Energie AG has appointed Joachim Manns as the new technical director of the MVV Umwelt. The power plant manager at Rheinhafen-Dampfkraftwerk (RDK) in Karlsruhe will thus succeed Dr. Hansjorg Roll, who moved at the beginning of the year to become Chief Technology Officer at the MVV Energie parent group. Dr. Manns (49) has managed the power plant operated by EnBW in Karlsruhe since 2013.